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Nasdaq · USD

MKSI

MKS INC

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110
SEC CIK
0001049502
Parsed reports
467

Last 12 months

Inside the activity.

0 purchase rows · 45 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202501
Jan 202600
Feb 2026015
Mar 202603
Apr 202600
May 2026016
Jun 202607
Jul 202600
Aug 202602
Sep 202601
Oct 202600

Latest available

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
February 15, 2018 Filed Feb 16, 2018 23:01 UTC
Quirk Brian CharlesSr. VP, Global Operations
Exercise / conversionCommon Stock 1,230 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006776 · form4.xml · nonDerivative · entry 6

Quirk Brian Charles · CIK 0001600515 · Sr. VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,498.585

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:01 UTC
Quirk Brian CharlesSr. VP, Global Operations
Exercise / conversionCommon Stock 1,489 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006776 · form4.xml · nonDerivative · entry 5

Quirk Brian Charles · CIK 0001600515 · Sr. VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,268.585

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:01 UTC
Quirk Brian CharlesSr. VP, Global Operations
Exercise / conversionCommon Stock 2,157 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006776 · form4.xml · nonDerivative · entry 4

Quirk Brian Charles · CIK 0001600515 · Sr. VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,779.585

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:01 UTC
Quirk Brian CharlesSr. VP, Global Operations
Exercise / conversionCommon Stock 2,805 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006776 · form4.xml · nonDerivative · entry 3

Quirk Brian Charles · CIK 0001600515 · Sr. VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,622.585

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:01 UTC
Quirk Brian CharlesSr. VP, Global Operations
Exercise / conversionCommon Stock 1,773.149 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006776 · form4.xml · nonDerivative · entry 2

Quirk Brian Charles · CIK 0001600515 · Sr. VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,817.585

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:01 UTC
Quirk Brian CharlesSr. VP, Global Operations
Exercise / conversionCommon Stock 2,181.553 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006776 · form4.xml · nonDerivative · entry 1

Quirk Brian Charles · CIK 0001600515 · Sr. VP, Global Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,044.436

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 1,098 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 18

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,817.275

Underlying: Common Stock · 1,098 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F9 · derivative.exercise_date: These RSUs vest in three annual installments as follows: 20% of the RSUs vests on February 15, 2017, 30% of the RSUs vests on February 15, 2018 and the remaining 50% of the RSUs vests on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F9 · derivative.expiration_date: These RSUs vest in three annual installments as follows: 20% of the RSUs vests on February 15, 2017, 30% of the RSUs vests on February 15, 2018 and the remaining 50% of the RSUs vests on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 4,058 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 17

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,915.275

Underlying: Common Stock · 4,058 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F9 · derivative.exercise_date: These RSUs vest in three annual installments as follows: 20% of the RSUs vests on February 15, 2017, 30% of the RSUs vests on February 15, 2018 and the remaining 50% of the RSUs vests on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F9 · derivative.expiration_date: These RSUs vest in three annual installments as follows: 20% of the RSUs vests on February 15, 2017, 30% of the RSUs vests on February 15, 2018 and the remaining 50% of the RSUs vests on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 2,034 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 16

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,973.275

Underlying: Common Stock · 2,034 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F8 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F8 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 2,013 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 15

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,184.07

Underlying: Common Stock · 2,013 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F7 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F7 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 142 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 14

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,007.275

Underlying: Common Stock · 142 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F6 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F6 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 1,723 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 13

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,149.275

Underlying: Common Stock · 1,723 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F6 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F6 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionRestricted Stock Unit · Derivative 2,085 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 12

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,197.07

Underlying: Common Stock · 2,085 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F5 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F5 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
GrantRestricted Stock Unit · Derivative 3,150.315 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 11

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,967.59

Underlying: Common Stock · 3,150.315 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F4 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F4 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
GrantRestricted Stock Unit · Derivative 4,725.473 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · derivative · entry 10

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,909.543

Underlying: Common Stock · 4,725.473 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F3 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F3 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Tax withholdingCommon Stock 5,204 $111.10 $578,164.40
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 8

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,949

F2 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 1,098 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 7

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,153

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 4,058 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 6

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,055

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 2,034 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 5

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,997

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 2,013 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 4

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,963

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 142 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 3

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,950

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 1,723 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 2

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,808

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 23:05 UTC
Werth Dennis LSr. VP, Business Units
Exercise / conversionCommon Stock 2,085 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006783 · form4.xml · nonDerivative · entry 1

Werth Dennis L · CIK 0001550572 · Sr. VP, Business Units

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,085

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionRestricted Stock Unit · Derivative 1,477 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 15

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,961.785

Underlying: Common Stock · 1,477 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F10 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F10 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionRestricted Stock Unit · Derivative 1,787 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 14

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,184.23

Underlying: Common Stock · 1,787 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F9 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F9 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionRestricted Stock Unit · Derivative 2,007 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 13

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,438.785

Underlying: Common Stock · 2,007 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F8 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day

F8 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionRestricted Stock Unit · Derivative 2,608.635 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 12

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,971.23

Underlying: Common Stock · 2,608.635 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F7 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F7 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionRestricted Stock Unit · Derivative 1,419.319 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 11

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,445.785

Underlying: Common Stock · 1,419.319 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F6 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F6 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionRestricted Stock Unit · Derivative 1,745.043 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 10

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,579.865

Underlying: Common Stock · 1,745.043 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F5 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day

F5 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
GrantRestricted Stock Unit · Derivative 3,150.315 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 9

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,112.1

Underlying: Common Stock · 3,150.315 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F4 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F4 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
GrantRestricted Stock Unit · Derivative 4,725.473 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · derivative · entry 8

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,909.703

Underlying: Common Stock · 4,725.473 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F3 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F3 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Tax withholdingCommon Stock 3,595 $111.10 $399,404.50
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 7

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,832.065

F2 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionCommon Stock 1,477 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 6

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,427.065

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionCommon Stock 1,787 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 5

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,950.065

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionCommon Stock 2,007 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 4

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,163.065

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionCommon Stock 2,608.635 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 3

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,156.065

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionCommon Stock 1,419.319 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 2

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,547.43

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:59 UTC
Abrams John RSr. VP, Global Sales & Service
Exercise / conversionCommon Stock 1,745.043 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006774 · form4.xml · nonDerivative · entry 1

Abrams John R · CIK 0001600505 · Sr. VP, Global Sales & Service

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,128.111

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionRestricted Stock Unit · Derivative 2,461 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 15

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,688.463

Underlying: Common Stock · 2,461 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F10 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F10 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionRestricted Stock Unit · Derivative 2,978 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 14

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,176.206

Underlying: Common Stock · 2,978 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F9 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F9 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2018, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionRestricted Stock Unit · Derivative 4,014 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 13

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,149.463

Underlying: Common Stock · 4,014 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F8 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F8 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionRestricted Stock Unit · Derivative 5,218 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 12

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,154.206

Underlying: Common Stock · 5,218 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F7 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F7 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2017, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionRestricted Stock Unit · Derivative 3,073.858 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 11

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,163.463

Underlying: Common Stock · 3,073.858 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F6 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F6 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionRestricted Stock Unit · Derivative 3,780.425 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 10

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,372.206

Underlying: Common Stock · 3,780.425 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F5 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F5 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2016, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC GrantRestricted Stock Unit · Derivative 5,850.585 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 9

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,539.048

Underlying: Common Stock · 5,850.585 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F4 · derivative.exercise_date: These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F4 · derivative.expiration_date: These RSUs vest in three equal annual installments commencing on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC GrantRestricted Stock Unit · Derivative 8,775.878 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · derivative · entry 8

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,952.084

Underlying: Common Stock · 8,775.878 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F3 · derivative.exercise_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

F3 · derivative.expiration_date: These RSUs are subject to the achievement of performance criteria determined in the first year of grant and thereafter vest in three equal annual installments beginning on February 15, 2019, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Tax withholdingCommon Stock 8,245 $111.10 $916,019.50
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · nonDerivative · entry 7

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,432.846

F2 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionCommon Stock 2,461 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · nonDerivative · entry 6

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,677.846

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionCommon Stock 2,978 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · nonDerivative · entry 5

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,216.846

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document
February 15, 2018 Filed Feb 16, 2018 22:56 UTC Exercise / conversionCommon Stock 4,014 Not disclosed Not disclosed
Disclosure

SEC source: 0001127602-18-006769 · form4.xml · nonDerivative · entry 4

Lee John Tseng-Chung · CIK 0001414656 · Sr. VP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,238.846

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.